/*
 * Copyright (c) 1997, 1998, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
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 *
 *
 */

package com.sun.java.swing.plaf.motif;

import javax.swing.*;
import javax.swing.plaf.basic.BasicOptionPaneUI;
import javax.swing.plaf.ComponentUI;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.Rectangle;

/**
 * Provides the CDE/Motif look and feel for a JOptionPane.
 * <p>
 * <strong>Warning:</strong>
 * Serialized objects of this class will not be compatible with
 * future Swing releases.  The current serialization support is appropriate
 * for short term storage or RMI between applications running the same
 * version of Swing.  A future release of Swing will provide support for
 * long term persistence.
 *
 * @author Scott Violet
 */
public class MotifOptionPaneUI extends BasicOptionPaneUI {

  /**
   * Creates a new MotifOptionPaneUI instance.
   */
  public static ComponentUI createUI(JComponent x) {
    return new MotifOptionPaneUI();
  }

  /**
   * Creates and returns a Container containin the buttons. The buttons
   * are created by calling <code>getButtons</code>.
   */
  protected Container createButtonArea() {
    Container b = super.createButtonArea();

    if (b != null && b.getLayout() instanceof ButtonAreaLayout) {
      ((ButtonAreaLayout) b.getLayout()).setCentersChildren(false);
    }
    return b;
  }

  /**
   * Returns null, CDE/Motif does not impose a minimum size.
   */
  public Dimension getMinimumOptionPaneSize() {
    return null;
  }

  protected Container createSeparator() {
    return new JPanel() {

      public Dimension getPreferredSize() {
        return new Dimension(10, 2);
      }

      public void paint(Graphics g) {
        int width = getWidth();
        g.setColor(Color.darkGray);
        g.drawLine(0, 0, width, 0);
        g.setColor(Color.white);
        g.drawLine(0, 1, width, 1);
      }
    };
  }

  /**
   * Creates and adds a JLabel representing the icon returned from
   * <code>getIcon</code> to <code>top</code>. This is messaged from
   * <code>createMessageArea</code>
   */
  protected void addIcon(Container top) {
        /* Create the icon. */
    Icon sideIcon = getIcon();

    if (sideIcon != null) {
      JLabel iconLabel = new JLabel(sideIcon);

      iconLabel.setVerticalAlignment(SwingConstants.CENTER);
      top.add(iconLabel, "West");
    }
  }

}
